subpages for adding and canceling pre-approvals and a set of
migrations for replacing the old IdApprovedDetail with a slightly less
confusing Preapproval model.
- Legacy-Id: 4411
tables from legacy to new through Django (with minimal cleaning to
have the import go through) and removing migrations from submit and
liaisons as they interfere with the clean slate of the new database,
adjusting IPR model to add null=True on fields with nulls in the
database
- Legacy-Id: 3778
